Download of Unretiner 1.0 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The most popular versions of Unretiner for Mac are 1.3 and 1.0. Unretiner for Mac belongs to Design & Photo Tools. This free Mac application was originally designed by Bonobo Labs. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
A tool for iOS developers to easily resize their @2x or -hd cocos2d images in seconds! Great for testing out non retina devices before the big painful export from Photoshop.
Supports .png .jpg .tif and .bmp.
To use simply drag @2x or -hd named images (or a folder containing the images) onto the application, choose an output folder and you are done!
Remember that Unretiner is great for some images, but nothing beats recreation.
You may want to check out more Mac applications, such as Unretina or IconKit, which might be related to Unretiner.